Euler's disk scientific educational toy - video

**Altair** · Oct 17, 2021, 10:51 PM

Euler's disk scientific educational toy used to illustrate and study the dynamical system of a spinning and rolling disk on a flat or curved surface. 2:01 video.

Previously:

Magnus effect - GIF
Meissner effect demonstration - GIF
Sakai paperclip top - GIF
Intermediate axis theorem - GIF and video
Gilbert U-238 Atomic Energy Lab toy lab set - photo

**mklotz** · Oct 18, 2021, 10:03 AM

Important enough to warrant an article in Wikipedia...

https://en.wikipedia.org/wiki/Euler%27s_Disk

**Karl_H** · Oct 19, 2021, 09:39 AM

This is one I made. I copied the dimensions from one I got at the Craftsmanship Museum in Carlsbad.

Euler's disk scientific educational toy - video-eulers-disk.jpeg

(And yes, I do have a drawing.)

Euler Disk Drawing v1.pdf

**hemmjo** · Oct 24, 2021, 06:30 AM

Thanks for the drawing, but you need two components. Is that part you made the base and you use a coin or similar as the spinning disk?

**Karl_H** · Oct 24, 2021, 07:25 AM

Originally Posted by hemmjo

[B]ut you need two components. Is that part you made the base and you use a coin or similar as the spinning disk?

The part I made (and in the drawing) is the Euler's Disk. The video shows a disk spinning on a parabolic mirror, which makes it spin a bit better than if it was on a flat surface. With the heft of my piece, I am leery of using a glass mirror.